Ricoh A095, Руководство по обслуживанию

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Rev. 6/13/97
A095/A096/A097 FSM 5-133
If VM100/VM800 do not fall within Specifications.
1. Enter SP mode
2. Enter SP Test Mode page 3.
3. Select Output mode.
4. Enter output number 57 (VM100)
5. Connect your (+) meter lead to the Drum Grounding Plate connector(see above).
6. Connect your (-) meter lead to frame ground.
7. Press “ON” on the touch screen to turn on VM100.
8. Monitor the voltage on you meter.
9. Enter output number 58 (VM800)
10. Press “ON” on the touch screen to turn on VM800.
11. Monitor your meter.
•
If both voltages are in specification, the voltages applied during potential sensor
calibration are good.
•
If either voltage is out of specification, disconnect CN604 and check the
voltages again (see above).
•
During potential sensor calibration, the same voltages are applied to the
development unit and drum shaft to prevent toner from being transferred to the
drum. If there is an electrical short or resistance to the frame in the development
unit or Rear Development Unit Holder it may effect the VM100/800 voltage. Also
missing OPC material (chips) in the surface of the drum may cause VM800 to
arc through the drum, resulting in improper VM800 voltage.
If voltages are still out of specification:
•
Replace the High Voltage Control Board.
If voltages are good:
•
Inspect the Drum Grounding Plate and Drum Drive Shaft for wear.
•
Inspect the drum grounding tab located inside the OPC drum, for toner
contamination and good contact.
•
Try replacing the drum potential sensor (AW330003)
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